A new 3D simulation framework to model blast induced rock mass displacement using physics engines

Tordoir, A., Weatherley, D., Onederra, I. and Bye, A. (2009). A new 3D simulation framework to model blast induced rock mass displacement using physics engines. In: Jose A. Sanchidrian, Rock Fragmentation by Blasting: Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting - Fragblast 9. 9th International Symposium on Rock Fragmentation by Blasting - Fragblast 9, Granada, Spain, (381-388). 13-17 September 2009.

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Name Description MIMEType Size Downloads
Author Tordoir, A.
Weatherley, D.
Onederra, I.
Bye, A.
Title of paper A new 3D simulation framework to model blast induced rock mass displacement using physics engines
Conference name 9th International Symposium on Rock Fragmentation by Blasting - Fragblast 9
Conference location Granada, Spain
Conference dates 13-17 September 2009
Proceedings title Rock Fragmentation by Blasting: Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting - Fragblast 9
Journal name Rock Fragmentation by Blasting - Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting, FRAGBLAST 9
Place of Publication Leiden, Netherlands
Publisher CRC Press/Balkema
Publication Year 2009
Sub-type Fully published paper
ISBN 9780415482967
0415482968
9780203862919
0203862910
Editor Jose A. Sanchidrian
Start page 381
End page 388
Total pages 8
Collection year 2011
Language eng
Formatted Abstract/Summary Blast induced rock mass displacement can have a significant impact on ore recovery and downstream productivity in open pit mining operations. As such, several attempts have been made to develop empirical and numerical models capable of predicting both the magnitude of displacement as well as muckpile digability for given blast design inputs. Generally however, these models have been limited by their oversimplification of boundary conditions, disregard of key processes such as inter particle collisions and/or their two dimensional nature. Recent developments and availability of both software and hardware dedicated to rigid body dynamics programs (i.e. physics engines) has facilitated new avenues in which to simulate particle motion and collision detection in three dimensions. This paper introduces a novel modeling framework which makes use of physics engines and established empirical relations to model blast induced rock mass displacement. The model is aimed at the production stages of operating mines where knowledge of the magnitude of displacement is required for post blast decision making. Preliminary results from two case studies based on full scale production blasts indicate that the model generally responds well to the horizontal and the 3D displacement components. With regard to vertical displacement, the model appears to be overestimating the magnitude of displacement near the free face and underestimating displacement at the back of the blast. It is thought that this could be a result of the current implementation of blast timing as well as the uniform block size representing the blast volume. Future work is focusing on addressing the limitations identified.
Copyright Taylor & Francis Group, London
Subjects E1
8402 Primary Mining and Extraction Processes of Mineral Resources
091405 Mining Engineering
091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
091307 Numerical Modelling and Mechanical Characterisation
Keyword 3D Simulation
Rock mass displacement
Open pit mining
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status Non-UQ
Additional Notes Session 4: Modelling of rock blasting.

 
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